diff --git a/install-dev/init.php b/install-dev/init.php
index 05fde922b..69c0d27c0 100644
--- a/install-dev/init.php
+++ b/install-dev/init.php
@@ -43,7 +43,7 @@ require_once(_PS_INSTALL_PATH_ . 'install_version.php');
 // we check if theses constants are defined
 // in order to use init.php in upgrade.php script
 if (!defined('__PS_BASE_URI__'))
-	define('__PS_BASE_URI__', str_replace('//', '/', '/'.trim(preg_replace('#/(install(-dev|-new)?)$#', '/', str_replace('\\', '/', dirname($_SERVER['REQUEST_URI']))), '/').'/'));
+	define('__PS_BASE_URI__', str_replace('//', '/', '/'.trim(preg_replace('#/(install(-dev)?)$#', '/', str_replace('\\', '/', dirname($_SERVER['REQUEST_URI']))), '/').'/'));
 
 if (!defined('_THEME_NAME_'))
 	define('_THEME_NAME_', 'default');